Fire screen



FIG. 1 is a perspective view of a fire screen showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof; and

FIG. 5 is a side elevational view of the side opposite that in FIG. 4.

The ornamental design for a fire screen, as shown.